Author Topic: Exhaust manifold install- '66, I6, single exhaust  (Read 4673 times)

bandit1

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Exhaust manifold install- '66, I6, single exhaust
« on: September 04, 2010, 03:54:54 PM »
I'm replacing the exhaust system. I have some questions regarding the exhaust manifold installation.

Between the manifold (new) and head surface, should I use a new gasket or should I use something like Ultra Copper Maximum Temperature RTV Silicone Gasket Maker? I've heard some people say to use the gasket, and some say to use the RTV.

Also, what about:
Manifold bolts (new): threadlocker (red,blue)? OR antisieze? OR nothing?
What should I use to clean the threads that the bolts go into?

Manifold studs (new): threadlocker (red,blue)? OR antisieze? OR nothing?

66GTKFB

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Re: Exhaust manifold install- '66, I6, single exhaust
« Reply #1 on: September 04, 2010, 05:07:24 PM »
The intake manifold requires a gasket and if an exhaust manifold gasket came with your rebuild kit, I would use it, others would not - eh. I would not use any RTV or hi-temp liquid gasket maker stuff on the exhaust manifold.
If you want new bolts, try AMP Products http://www.amkproducts.com/ for all kinds of hardware. The manifold kit has 22 items, p/n F-554, $18.00. I don't know what the 22 items are. There is a $30 minimum order.
Run a 3/8-16 tap into the hole to clean them up although it's not necessary unless the holes sat exposed to the weather or if there was a lot of crud when you took the old ones out. A high temp anti-sieze compound is OK, but not necessary. Don't bother with Locktite on anything other than studs and then use the red.
Jim


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Re: Exhaust manifold install- '66, I6, single exhaust
« Reply #3 on: September 09, 2010, 12:39:27 PM »
Those bolt holes look just fine.  You may want to spray a little silicon spray in there, but otherwise don't bother.  I would definitely use a gasket and get new bolts.  Torque them to specs and not over tighten them. 

bandit1

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Re: Exhaust manifold install- '66, I6, single exhaust
« Reply #4 on: September 09, 2010, 02:08:57 PM »
Ok. Thanks.

bandit1

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Re: Exhaust manifold install- '66, I6, single exhaust
« Reply #5 on: September 13, 2010, 01:21:17 AM »
I bought a new choke tube. How is it inserted into the new exhaust manifold? Is it press-fit or can it just be manually inserted? Also, it's difficult to get the tube angled properly to screw into the choke housing. I didn't want to try to bend it.

66GTKFB

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Re: Exhaust manifold install- '66, I6, single exhaust
« Reply #6 on: September 13, 2010, 10:53:35 AM »
It's a force fit. If it's too loose, deform the tube "slightly".
Jim

bandit1

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Re: Exhaust manifold install- '66, I6, single exhaust
« Reply #7 on: September 13, 2010, 02:53:06 PM »
Ok. Thanks.

bandit1

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Re: Exhaust manifold install- '66, I6, single exhaust
« Reply #8 on: September 21, 2010, 05:39:45 PM »
I'm installing the exhaust system, but am having a problem. I had already tightened the manifold/head pipe connection, but not the head pipe/intermediate pipe connection or the right rear pipe hanger. The head to intermediate connection is as deep as I can get it (about 2 inches). I don't think it will allow any more. The muffler is hanging crooked. The intermediate pipe is about 1 inch too long to allow the muffler to be straight/fit correctly. Here are some photos. I guess I'll trim 1 inch off the head pipe (at the intermediate pipe connection). Any advice/info?

http://members.cox.net/steel3rivers/P10409101.jpg
http://members.cox.net/steel3rivers/P10409051.jpg

66GTKFB

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Re: Exhaust manifold install- '66, I6, single exhaust
« Reply #9 on: September 21, 2010, 09:35:59 PM »
I think that the pipe at the muffler may not be bent correctly. That is not unusual for pipes as I had to take mine to a muffler shop to "improve" the bend over the rear axle (hint). Remember too , that almost all pipes are too long, eg, better to be too long than - -, you get the idea. That was another thing I had to do to get a descent fit and a saws-all (mine is a Dewalt) made that easy to do.
Jim.

bandit1

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Re: Exhaust manifold install- '66, I6, single exhaust
« Reply #10 on: September 21, 2010, 10:29:36 PM »
Ok. Thanks.

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Re: Exhaust manifold install- '66, I6, single exhaust
« Reply #11 on: September 22, 2010, 04:45:38 AM »
My sawz-all is one of the best tools I have in my shop. 

 

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